পাঠ্যপুস্তকে রংধনুর রং হিসেবে উল্লেখ করা হয়েছে: 'Red, orange and yellow, Green and blue, Violet, indigo too!'
Class 2 › English for Today › Chapter 7: Colours, Shapes and Signs › Topic: রং
Aligned to the NCTB national curriculum.